class TGeoMaterial: public TNamed, public TAttFill

 Default constructor

 constructor

 constructor

 Constructor with state, temperature and pressure.

 constructor

copy constructor

assignment operator

 Destructor

 Connect user-defined extension to the material. The material "grabs" a copy, so
 the original object can be released by the producer. Release the previously
 connected extension if any.

 NOTE: This interface is intended for user extensions and is guaranteed not
 to be used by TGeo

 Connect framework defined extension to the material. The material "grabs" a copy,
 so the original object can be released by the producer. Release the previously
 connected extension if any.

 NOTE: This interface is intended for the use by TGeo and the users should
       NOT connect extensions using this method

 Get a copy of the user extension pointer. The user must call Release() on
 the copy pointer once this pointer is not needed anymore (equivalent to
 delete() after calling new())

 Get a copy of the framework extension pointer. The user must call Release() on
 the copy pointer once this pointer is not needed anymore (equivalent to
 delete() after calling new())

 Provide a pointer name containing uid.

 Set radiation/absorbtion lengths. If the values are negative, their absolute value
 is taken, otherwise radlen is recomputed using G3 formula.

 static function
  Compute Coulomb correction for pair production and Brem
  REFERENCE : EGS MANUAL SLAC 210 - UC32 - JUNE 78
                        FORMULA 2.7.17

 return true if the other material has the same physical properties

 print characteristics of this material

 Save a primitive as a C++ statement(s) on output stream "out".

 Get some default color related to this material.

 Get a pointer to the element this material is made of.

 Single interface to get element properties.

 Retreive material index in the list of materials

 Create the material representing the decay product of this material at a
 given time. The precision represent the minimum cumulative branching ratio for
 which decay products are still taken into account.

 Fills a user array with all the elements deriving from the possible
 decay of the top element composing the mixture. Each element contained
 by <population> may be a radionuclide having a Bateman solution attached.
 The precision represent the minimum cumulative branching ratio for
 which decay products are still taken into account.
 To visualize the time evolution of each decay product one can use:
    TGeoElement *elem = population->At(index);
    TGeoElementRN *elemrn = 0;
    if (elem->IsRadioNuclide()) elemrn = (TGeoElementRN*)elem;
 One can get Ni/N1(t=0) at any moment of time. Ni is the number of atoms
 of one of the decay products, N1(0) is the number of atoms of the top
 element at t=0.
    Double_t fraction_weight = elemrn->Ratio()->Concentration(time);
 One can also display the time evolution of the fractional weigth:
    elemrn->Ratio()->Draw(option);

 static function
  Compute screening factor for pair production and Bremstrahlung
  REFERENCE : EGS MANUAL SLAC 210 - UC32 - JUNE 78
                        FORMULA 2.7.22

 getters & setters